Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e34e537ceea9cb6…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 00:18:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 048f6d8932c6d7c8f928d7a8884e8c8b SHA-1: 11aa88a5b60a4dc26ea2c4367edd8b949de467c6 SHA-256: 7e34e537ceea9cb6b7077308ec8763cdc576157beb91dce855aa83bbd6929885
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for free game items and hacks, which is a common social engineering tactic. It directs users to a malicious redirector URL, indicating an attempt to lead the user to a malicious site or download. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/479516143/minecraft-toys-for-free-game-hack In PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-exploit-lvl-7-roblox_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-free-without-sign-in-no-download_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/robux-hack-me-no-verification_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-btools-hack-2021-download_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/robux-gg-free_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-2021-1m-free-robux-give-away_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-free-t-shirt-upload_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/shooting-roblox-free-too-play-on-line_GM431946152.pdfIn PDF document text
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000313b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313B 22352 bytes
SHA-256: 15b20799ca9bab653977047f26f65f3251284dac3cfdc886df1fef38a631f8cd
font_01_sfnt_off0000625b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625B 18180 bytes
SHA-256: f81bb2f2fd86575a0e0f0902236f9c8512641ba003de241774aa63060d9f6659

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